L-band high-gain receiving antenna capable of actively selecting direction

Abstract

The utility model discloses an L-frequency-band high-gain receiving antenna capable of actively selecting directions. The L-frequency-band high-gain receiving antenna comprises an antenna cover, an antenna array and a base, the antenna array is of an omnidirectional receiving antenna structure formed by splicing right-handed circularly polarized antennas with the top being a polygon and the side faces being six, totally seven, and is fixed to the base through a plurality of antenna support rings. Each right-handed circularly polarized antenna is correspondingly connected with a low-noise amplifier filter; the low noise amplifier filter receives signals transmitted by each right-handed circularly polarized antenna, and carries out amplification and filtering processing; the base is provided with a signal switching unit, and the signal switching unit is respectively connected with all the low-noise amplifier filters and is used for controlling and outwards transmitting signals processed by all the low-noise amplifier filters; a positioning unit is arranged on the base and is used for receiving an instruction and feeding back position information of the antenna array; the base is provided with an RS485 controller which is responsible for monitoring and adjusting the operation state of the whole antenna system. A power module is arranged on the base.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless communication antennas, in particular to an L-band high-gain receiving antenna capable of actively selecting a direction. Background Art

[0002] As we all know, although L-band omnidirectional high-gain receiving antennas have significant advantages in the field of wireless communications, existing devices with similar technologies still have certain shortcomings and limitations. Specifically:

[0003] 1. Limited environmental adaptability.

[0004] Poor adaptability to harsh environments: Although some antenna systems adopt waterproof and dustproof design measures, their performance may be affected in extremely harsh environments (such as strong winds, heavy rain, high temperatures, etc.).

[0005] 2. Electromagnetic interference and compatibility issues.

[0006] Electromagnetic interference: In a complex electromagnetic environment, an omnidirectional high-gain receiving antenna may be interfered with by other devices, affecting communication quality.

[0007] Compatibility issues: When integrating with devices of different brands and models, you may encounter issues with communication protocols, interface standards, etc., requiring additional adaptation and debugging.

[0008] 3. Performance limitations.

[0009] Directivity Conflict: Omnidirectional high-gain antennas may sacrifice directivity to some extent while pursuing omnidirectional coverage. This means that in certain directions, the antenna's gain may be lower than that of a directional antenna.

[0010] Frequency limitations: Antenna performance is often limited by the operating frequency. While omnidirectional high-gain reception is possible in the L-band, redesign or adjustments may be required in other frequency bands. Utility Model Content

[0011] In view of this, the present invention provides an L-band high-gain receiving antenna that actively selects direction. By adopting an omnidirectional receiving antenna structure composed of a uniquely structured antenna array and combining it with array signal processing technology, the device can achieve omnidirectional communication coverage, overcoming the limitations of traditional high-gain antennas in terms of communication direction. In particular, the antenna array in the device also has beamforming capabilities, which can dynamically adjust the shape and direction of the beam as needed, thereby improving the flexibility and efficiency of communication. In addition, the device can effectively suppress interference and multipath effects through its antenna array structure combined with signal processing technology, thereby improving the quality of signal reception and the stability of communication.

[0012] The specific technical solutions of the utility model are as follows:

[0013] An L-band high-gain receiving antenna with active direction selection comprises a radome, an antenna array, and a base. The antenna array is an omnidirectional receiving antenna structure with a polygonal top and six right-hand circularly polarized antennas (a total of seven) on its sides, and is secured to the base via multiple antenna brackets. Each right-hand circularly polarized antenna is connected to a corresponding low-noise amplifier (LNA) filter, which receives, amplifies, and filters the signal transmitted by each right-hand circularly polarized antenna. The base is provided with a signal switching unit, which is connected to each LNA filter and is used to control and transmit signals processed by each LNA filter. The base is provided with a positioning unit connected to the signal switching unit and is used to receive instructions and provide feedback on the position of the antenna array. The base is provided with an RS485 controller responsible for monitoring and adjusting the operating status of the entire antenna system, thereby achieving intelligent management. The base is provided with a power module.

[0014] In the above solution, the positioning unit is an electronic device composed of a GPS / BD positioning antenna for providing accurate position information of the antenna array.

[0015] In the above solution, a power plug, a power switch, a status indicator light, a radio frequency connector and a control connector are also provided on the bottom surface of the base.

[0016] In the above solution, the antenna cover is a cylindrical cover shell made of glass fiber reinforced plastic with an opening formed into an outer folded edge and connected and fixed to the base through screw holes provided on the outer folded edge and a hemispherical top.

[0017] In the above solution, the top surface of the base is provided with an annular groove, in which a sealing ring is nested. The sealing ring is tightly attached to the inner edge of the antenna cover opening, so that the waterproof performance of the entire receiving antenna is enhanced after the antenna cover and the base are fixed with screws.

[0018] The advantages of this utility model are as follows:

[0019] 1. Compact structure and easy to install: The equipment adopts a modular design, with tight connections between components and a compact overall structure, making it easy to install and deploy in a limited space.

[0020] 2. Flexible antenna array design: Seven directional antennas can be flexibly configured and adjusted according to actual communication needs to optimize the antenna coverage and gain performance.

[0021] 3. Waterproof and dustproof, adaptable to harsh environments: The antenna cover is used together with the sealing ring during the assembly process to effectively protect the antenna array from the impact of harsh environments, ensuring that the equipment can still work normally in bad weather and complex environments.

[0022] 4. High stability and reliability: By setting up an RS485 controller combined with intelligent management and monitoring programs, potential faults and problems can be discovered and handled in a timely manner, ensuring long-term stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 It is an exploded diagram of the overall structure of the utility model.

[0025] Figure 2 Schematic diagram of the structure of the bottom surface of the base. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0027] like Figure 1 As shown, the L-band high-gain receiving antenna with active direction selection described in the present invention includes an antenna cover 10, an antenna array 30 and a base 20. Among them, the antenna array 30 is an omnidirectional receiving antenna structure with a polygonal top and 6 right-hand circularly polarized antennas on the side, totaling 7 pieces, and is fixed to the base 20 through multiple antenna brackets 31. This specific array design composed of 7 directional antennas enables the antenna to achieve omnidirectional communication coverage within the L-band, ensuring the omnidirectional and dead-angle-free signal reception. At the same time, each right-hand circularly polarized antenna is connected to a low-noise amplifier filter 40, which receives the signal transmitted by each right-hand circularly polarized antenna and performs amplification and filtering processing. This enables the entire antenna array to receive signals at a longer distance and with weaker signals, thereby improving the reliability and stability of communication.

[0028] In addition, in order to ensure the normal operation of the entire device, a signal switching unit 50 , a positioning unit 60 , an RS485 controller 70 and a power module 80 are also fixedly installed on the base 20 .

[0029] The signal switching unit 50 is a single-chip circuit board structure that integrates multiple circuit functions, including signal amplification, filtering, and demodulation. It efficiently processes received signals and extracts useful communication information. Structurally, it is connected to all seven low-noise amplifier filters 40 connected to the right-handed circularly polarized antennas, controlling and transmitting the processed signals. It is also connected to the positioning unit 60, an electronic device comprised of a GPS / BD positioning antenna that provides precise position information for the antenna array. This unit receives commands and provides feedback on the antenna array's position.

[0030] In addition, the RS485 controller 70 is responsible for monitoring and adjusting the operating status of the entire antenna system, and realizes intelligent management of the entire device by connecting to remote control devices such as computers.

[0031] To ensure the durability of the device, the radome 10 is a cylindrical, hemispherical glass fiber reinforced plastic housing with an opening that forms an outer fold. Screw holes are provided in the outer fold and the housing is secured to the base 20 via multiple screws 11. The top surface of the base 20 features an annular groove (not shown), which houses a sealing ring 90. This ring 90 fits snugly against the inner edge of the radome opening, enhancing the waterproof performance of the entire receiving antenna when the radome 10 and base 20 are screwed together.

[0032] like Figure 2 As shown, the bottom surface of the base 20 is also provided with a power plug 21, a power switch 22, a status indicator light 23, a radio frequency connector 24, and a control connector 25. The power plug 21, power switch 22, and status indicator light 23 connect to the power module. The radio frequency connector 24 and control connector 25 connect to the signal switching unit circuit and the RS485 controller.

[0033] The L-band high-gain receiving antenna with active direction selection described in this utility model can cover the airspace of 0 to 360 degrees in azimuth and 0 to 90 degrees in elevation during specific use. Two control modes are used during operation:

[0034] 1) Automatic switching mode:

[0035] The RF combination unit features signal quality monitoring. By monitoring the quality of each unit's reception of different targets, the signal from the antenna unit with the best reception quality is output to the signal detection port. The RF combination unit measures the signal quality (strength) at each antenna unit and at each receiving frequency. Channel switching is initiated when the difference in signal quality between units exceeds a given threshold. If signal quality fluctuates, the output remains constant.

[0036] 2) Program control method:

[0037] When the target coordinates are known, the signal to be received is directly controlled and output to the corresponding receiving device through program control, combining the local coordinates and antenna pointing information to achieve program-controlled switching.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An L-band high-gain receiving antenna with active direction selection, comprising a radome, an antenna array, and a base; characterized in that: The antenna array is an omnidirectional receiving antenna structure with a polygonal top and 6 right-hand circularly polarized antennas (a total of 7) on the side, and is fixed to the base by multiple antenna brackets; each right-hand circularly polarized antenna is connected to a corresponding low-noise amplifier filter; the low-noise amplifier filter receives the signal transmitted by each right-hand circularly polarized antenna and amplifies and filters it; a signal switching unit is provided on the base, which is respectively connected to all low-noise amplifier filters to control and transmit outward the signals processed by each low-noise amplifier filter; a positioning unit connected to the signal switching unit is provided on the base, which is used to receive instructions and feedback the position information of the antenna array; an RS485 controller is provided on the base, which is responsible for monitoring and adjusting the operating status of the entire antenna system and then realizing intelligent management; a power module is provided on the base.

2. The L-band high-gain receiving antenna with active direction selection according to claim 1, characterized in that: The positioning unit is an electronic device composed of a GPS / BD positioning antenna and used to provide accurate position information of an antenna array.

3. The L-band high-gain receiving antenna with active direction selection according to claim 1 or 2, characterized in that: The bottom surface of the base is also provided with a power plug, a power switch, a status indicator light, a radio frequency connector and a control connector.

4. The L-band high-gain receiving antenna with active direction selection according to claim 1, characterized in that: The antenna cover is a columnar cover shell body with a hemispherical top and a glass fiber reinforced plastic material, which is opened into an outer folded edge and connected and fixed to the base through screw holes arranged on the outer folded edge.

5. The L-band high-gain receiving antenna with active direction selection according to claim 1, characterized in that: The top surface of the base is provided with an annular groove, in which a sealing ring is nested. The sealing ring is tightly attached to the inner edge of the antenna cover opening, so that the waterproof performance of the entire receiving antenna is enhanced after the antenna cover and the base are fixed with screws.

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